Yep, if you want a reason why Valve are "less evil" than other companies, one big thing to point to is the huge investment they've made into the Linux ecosystem. Even though it's in their own interests (Microsoft locking out steam would cripple their income), we can see with Epic suing Google/Apple that there are other, shittier ways that they could have attempted the same thing. The investment they've made into Linux, Proton, KDE etc benefit everyone and can't be taken away on a whim.